EMP, or electromagnetic pulse, is energy that a device or a nuclear explosion can omit, causing damage to electronic equipment. Damage to electronics and other materials that conduct electricity have been reported to reach as far as 930 miles away from the source of the EMP. Sending out an EMP burst can render electronic devices unusable. However, it is possible to protect your electronics from EMP with the aid of a Faraday cage.
Collect the electronic devices that you wish to protect from a potential EMP onto a table. Measure off an area around the items using a tape measure.
Find a cardboard or plastic box that is big enough to fit all of your devices and put them inside. Wad up some newspaper to keep the objects from moving around and close the box. Seal it using duct tape.
Wrap the box using aluminum foil. Make it a double layer of foil to protect it in case one layer gets ripped. Make sure you cover the box completely. Tape the foil in place. You have now protected your devices against EMP.